US Based Fluoride Alert has good information on arthritis and skeletal fluorosis. Below are some NZ based articles.

Is your arthritis really skeletal fluorosis?

See Case Study Published in NZ Medical Journal by Dr Michael Godfrey, Tauranga, 4th May 2018

New Evidence of Harm to  New Teeth and Old Bones

John Colquhoun BDS MPhil PhD Dip Ed, Honorary Research Fellow, University of Auckland

21st May 1991

Pure Water Journal

Page 1, Page 2, Page 3, Page 4, Page 5